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# kLinearPCMFormatFlagsSampleFractionMask

A flag that indicates the sample fraction mask.

```
var kLinearPCMFormatFlagsSampleFractionMask: AudioFormatFlags { get }
```

## Discussion

The number of fractional bits is equal to `(` [`mFormatFlags`](/documentation/CoreAudioTypes/AudioStreamBasicDescription/mFormatFlags) `&` [`kLinearPCMFormatFlagsSampleFractionMask`](/documentation/CoreAudioTypes/kLinearPCMFormatFlagsSampleFractionMask) `) >>` [`kLinearPCMFormatFlagsSampleFractionShift`](/documentation/CoreAudioTypes/kLinearPCMFormatFlagsSampleFractionShift).

---

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